Ball, Aerojet Rocketdyne Test Green Thrusters

Credit: SpaceX
Another non-toxic replacement for hydrazine monopropellant has passed ground testing, paving the way for a satellite flight test as early as 2015. Ball Aerospace and Aerospace Rocketdyne say their system, which uses a hydroxyl ammonium nitrate (HAN) mixture designated AF-M315E, with a special...

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